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Nephrology & Renal Medicine

Active Antibody-Mediated Allograft Rejection (AMR)

ICD-10 Code
T86.12_1

Humoral rejection triggered by donor-specific antibodies (DSAs) targeting HLA antigens on the graft endothelium. Histologically defined by microvascular inflammation (glomerulitis, capillaritis), linear C4d deposition in peritubular capillaries, and clinical detection of circulating DSAs.

Clinical Presentation & Protocol

Patient Usually Complains Of

Patient presents with a rise in serum creatinine from baseline [X] mg/dL to [Y] mg/dL, accompanied by new-onset proteinuria and/or hematuria. Recent donor-specific antibody (DSA) screening is positive. No history of medication non-adherence or recent nephrotoxic exposure. Symptoms include [fluid retention/decreased urine output/fatigue].

Clinical Examination Findings

Patient appears [well-appearing/ill]. Vital signs: BP [X/Y] mmHg (noting potential hypertension secondary to graft dysfunction). Physical exam reveals peripheral edema ([+1/+2/+3]), jugular venous distention, and tenderness over the renal graft site. No signs of systemic infection.

Treatment Protocol

Initiate induction therapy for active AMR: Plasmapheresis (PLEX) [X] sessions, IVIG [Y] g/kg, and pulse corticosteroids. Consider Rituximab [Z] mg if refractory. Optimize maintenance immunosuppression (Tacrolimus/Mycophenolate/Prednisone). Monitor DSA titers and graft function daily.

Detailed clinical guide coming soon.